body {
    background-color: #f5f7f9;
  }
  
  .page-nav-bar {
    background-color: #3296fa;
    .van-nav-bar__title {
      color: #fff;
    }
  }
  .van-icon-arrow-left:before {
      color: #eee;
  }
  .van-icon-lock:before {
      margin-top: 6px;
  }